+static int pkcs12_gen_mac(PKCS12 *p12, const char *pass, int passlen,
+ unsigned char *mac, unsigned int *maclen,
+ int (*pkcs12_key_gen)(const char *pass, int passlen,
+ unsigned char *salt, int slen,
+ int id, int iter, int n,
+ unsigned char *out,
+ const EVP_MD *md_type))
+{
+ const EVP_MD *md_type;
+ HMAC_CTX *hmac = NULL;
+ unsigned char key[EVP_MAX_MD_SIZE], *salt;
+ int saltlen, iter;
+ int md_size = 0;
+ int md_type_nid;
+ const X509_ALGOR *macalg;
+ const ASN1_OBJECT *macoid;
+
+ if (pkcs12_key_gen == NULL)
+ pkcs12_key_gen = PKCS12_key_gen_utf8;
+
+ if (!PKCS7_type_is_data(p12->authsafes)) {
+ PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_CONTENT_TYPE_NOT_DATA);
+ return 0;
+ }
+
+ salt = p12->mac->salt->data;
+ saltlen = p12->mac->salt->length;
+ if (!p12->mac->iter)
+ iter = 1;
+ else
+ iter = ASN1_INTEGER_get(p12->mac->iter);
+ X509_SIG_get0(p12->mac->dinfo, &macalg, NULL);
+ X509_ALGOR_get0(&macoid, NULL, NULL, macalg);
+ if ((md_type = EVP_get_digestbyobj(macoid)) == NULL) {
+ PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_UNKNOWN_DIGEST_ALGORITHM);
+ return 0;
+ }
+ md_size = EVP_MD_size(md_type);
+ md_type_nid = EVP_MD_type(md_type);
+ if (md_size < 0)
+ return 0;
+ if ((md_type_nid == NID_id_GostR3411_94
+ || md_type_nid == NID_id_GostR3411_2012_256
+ || md_type_nid == NID_id_GostR3411_2012_512)
+ && !getenv("LEGACY_GOST_PKCS12")) {
+ md_size = TK26_MAC_KEY_LEN;
+ if (!pkcs12_gen_gost_mac_key(pass, passlen, salt, saltlen, iter,
+ md_size, key, md_type)) {
+ PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_KEY_GEN_ERROR);
+ return 0;
+ }
+ } else
+ if (!(*pkcs12_key_gen)(pass, passlen, salt, saltlen, PKCS12_MAC_ID,
+ iter, md_size, key, md_type)) {
+ PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_KEY_GEN_ERROR);
+ return 0;
+ }
+ hmac = HMAC_CTX_new();
+ if (!HMAC_Init_ex(hmac, key, md_size, md_type, NULL)
+ || !HMAC_Update(hmac, p12->authsafes->d.data->data,
+ p12->authsafes->d.data->length)
+ || !HMAC_Final(hmac, mac, maclen)) {
+ HMAC_CTX_free(hmac);
+ return 0;
+ }
+ HMAC_CTX_free(hmac);
+ return 1;
+}
+